Convenient and improved protocols for the hydrogenation of esters using Ru catalysts derived from (P,P), (P,N,N) and (P,N,O) ligandsDedicated to Professor David Cole-Hamilton on the occasion of his retirement and for his outstanding contribution to transition metal catalysis.Electronic supplementary information (ESI) available: Full experimental procedures and data for reaction products. See DOI: 10.1039/c2dt30973d
An improved protocol where a pre-cursor, [Ru(Cl) 2 (NBD)(Py) 2 ], is treated with ligands to form [RuCl 2 (bidentate ligand)(diamine)] pre-catalysts for ester hydrogenation is reported. This family of catalysts, as well as a range of ruthenium complexes of tridentate P^N^X (X = NR 2 , OH) ligands ha...
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